Railway-track drill



(No Model.) 3 Sheets-#Sheet 1. D. A. MOORE. RAILWAY TRACK DRILL.

Patented May 24, 1898.

,Elue/2.51;

(No Model.) 3 Sheets-Sheet 2.

D. A. MOORE.

RAILWAY TRACK DRILL.

No. 604,410.y Patented May 24,1898. Y

w: sums ve'rzns co, PNo'mLl'rno., WASHINGTON. n, c.

DNITDD STATUS- PATDNT '@rricn.

DAvID A. MOORE, OF HARVEY, ILLINOIS, AssIGNOR To rrun BUDA FOUN- DRY ANDMANUFACTURING COMPANY, OF oIIIoAeo, ILLINOIS.

RAILWAY-TRACK DRILL.

SPECIFICATION forming part of Letters Patent No. 604,410, dated May 24,1898.

Application led March 2 2, 1 8 9 '7.

To allzwwm. it may concern: y'

Beit known that I, DAVID A. MOORE, a resident of Harvey, in the countyof Cook, in the State of Illinois', have invented certain new and usefulImprovements in Railway-Track Drills, of which I do declare thefollowing to be a full, clear, and exact description sui-licient toenable Others skilled in the art to make and use the same.

The present invention has relation moreA particularly to that class ofdrills adapted to bore railway-rails and the invention consists in thevarious novel features of construction hereinafter described,illustrated in the aocompanyin g drawings,and particularly pointf ed outin the claims at the end of this specication.

Figure l is a view in side elevation of a traclcdrill embodying myinvention. Fig. 2 is a view in horizontal section on line 2 2 of Fig. 1.Fig. 3 is a view in central vertical longitudinal section. Fig. 4 is aview in elevation looking toward the front, the hooked arms being shownin section. Fig. 5 is aview in vertical cross-section on line 5 5 ofFig. 2. Fig. 6 is a detail view in longitudinal vertical section at oneside of the screw and its Operating mechanism. Fig. 7 is a detail planview of the drill-stock sleeve with the engagement pin and springthereon. Fig. 'gis a detail View of the front cross-bar of the carriage,the drill-stock and screw-sleeve being shown in section.

A designates the side bars of the supporting-frame, the track ends ofthese side bars being formed with hooks a, adapted to pass over the headof the rail and bear against the web approximately at each 'side of theworking point of the drill. The opposite ends of the side bars A areshown as bent downward and connected, as at d', to a base-bar A',preferably of angle-iron and of any suitable length and width. Betweenthe side bars A extends a tie-bar a2, whereby greater rigidity is givento the frame.

.Upon the side bars A rests a sliding carriage B, whereby thedrill-stock and its operating mechanism will be sustained. Preferablythis sliding carriage B is formed as a rectangular` cast-metal frame,having laterally-projecting lugs or arms b to engage the Serial No.628,692. (No model.)

edges of the side bars A and whereby the oarriage B is retained in placeupon the frame while being permitted to move back and forth thereon. Thecarriage B has its front and rear cross-bars formed with bearings b ando6, through which the drill-stock G passes. At each side the carriage Bis provided with vertical iianges or ribs b2 and b3, and to the iiangesb2 are bolted the lower ends of the vertical support D, that ispreferably formed in the shape of an A-frame, (see Fig. 4,) the upperend of this A-frame being formed or provided with the yoke-arm D', theupper end of which is shown as united with the top of the A-frame D.(See Fig. l.) To the anges b3 of the carriage B are bolted the lowerends of a brace-frame E, that is also by preference shaped as anA-frame, the upper end or apex of this frame F. being bolted, as at e,(see Fig. 4,) to the upper part of the frame D. The purpose of the frameD is to support the shaft F, that carries a driving sprocket-wheel G,from which power will be transmitted by a sprocket-chain G' to thedrill-stock in manner to be presently defined. The shaft F is journaledin heads or bosses formed at the top of the frame D and its arm orextension D', and the front end of the shaft F is provided with a crankf, whereby the drill will be operated. (See Fig. 1.) v

In the preferred embodimentof my invention the drill-stock C is formedwith a central portion c, that passes through a bushing 7L in thebearing b' of the carriage B, and upon this central portion c of Vthedrill-stock is mounted a driving-sleeve K, that carries a sprocketwheelG2, to which rotation will be imparted by the sprocket-chain G'. `Thesleeve K is connected to the drill-stock C invorder to rotate the drill,the connection being preferably effected by means of a lug 761,projecting from the sleeve K into a longitudinal groove c', formed inthe central portion c of the drillstock. The front end of the sleeveK-that is to say, the end next to the operator-sets over the hub fm ofthe ratchet-wheel M, being free to revolve with respect thereto. Theouter face of the sleeve K is provided with a cam K', (see Fig. 5,)against which bears` the lower end lof the pivoted arInN,"the upper endof this arm carrying a pawl n, that en- IOO N and the carriage Bin orderto hold. thev lower end of the arm N in normal engagement with the faceof the cam K.

The reduced end c3 ofthe drill-stock C passes loosely through ascrew-threaded sleeve R, the sleeve R being retained upon thedrillstock-as, for example, by a pin cil-suitable washers c5 and c(ibeing fitted upon the reduced portion c3 of the drill-stock at the endsof the screw-sleeve R. As will be seen by reference more particularlytoFig. 3 of the drawings, the screw-sleeve R passes through the threadedhub of the ratchet-wheel M and is provided with `a longitudinal groover, `extending from end to end thereof, and into this groove enters ascrew s, that passes through a hole formed in the under side of theperforated boss or bearing b5 on the front .crossbar of the carriage B,the purpose of lthe slot fr and screw s being to insure thestraight-line movement of the sleeve R, as will presently more fullyappear.

In order to enable the drill-stock to be rapidly Withdrawn from itswork, I provide suitable means whereby the screw-sleeve R may be fedrapidly in backward direction, and in the preferred embodiment of thispart of my invention the driving-sleeve K willbe interlocked with theratchet-wheel M in order to secu-re the backward movement ofthescrewsleeve R. From the surface of the sleeve K projects a cam-shapedlug 7c, through which passes an engagement-pin J, the free end of thispin passing through a hole formed in the cam K. (See Fig. 5.) The pin Jis encircled by a coil-spring 7a', which serves to force the pin Jnormally to the position shown by dotted lines in Fig. 7. pin J isadapted to ride against the curved face of the cam-lu g 7c in order toretract the pin J against the force of the spring 7c', and when the pinJ is in the position seen by full lines in Fig. 7 the lug 7c will retainit in such position; but when the bent endj of the pin J is reversed thespring 7e will force the pin J to the position seen in Fig. 7 in dottedlines. The vend of the pin J will then pass between the spokes of theratchet-wheel M, and thus interlock the ratchet-wheel and the sleeve K.Consequently the ratchet-wheel M will partake of the speed of thedriving-sleeve K, and a much more effective withdrawal of the drill willbe secured than would be possible if the action of the cam K and a pawland ratchet were depended upon for effecting the withdrawal of thedrill.

In order to shift the carriage B, I prefer to provide the means next tobe described. The rear bar of the carriage B has pivotally connectedthereto (see Fig. 2) the links t, the front ends of these links beingpivoted, as at to be drilled.

The bent end j of thet', to the side arms o of the shifting-bar V. Theforward ends of the links t may be bifurcated, as shown in Figs. 2 and3, to receive the side arms o of the shifting-bar V, and the side arms oof the shifting-bar are provided with forward extensions fu', that willbear upon the top edges of the links tin order to limit the downwardmovement of the links and of the shifting-bar. The front ends of theside arms o of the shifting-bar are pivotally connected to brackets w,(see Fig. 2,)

. that are attached to the cross-bar A'.

From the foregoing description the operation of my improved drill willbe seen to be as follows: When the hooked ends of the side bars A havebeen set over the rail, as shown in Fig. l of the drawings, the operatorwill either by his hand or foot throw the shiftingbar V. from theposition shown by dotted lines in Fig. l to the position shown by fulllines, and this movement of the shifting-bar V will cause the slidingcarriage B to move forward until the drill C4 is brought against orapproximately against the web of the rail When the shifting-bar V andlink t are in the position shown by full lines The opthrough the mediumof the shaft F, sprocketwheel g@ and sprocket-wheel Gf2 impartrevolution to the driving-sleeve K, and inasmuch as this sleeve K iskeyed to the drill-stock C corresponding revolution will be imparted tothe drill. By reference more particularly to Fig. 5 of the drawings itwill be seen that as the driving-sleeve K revolves the cam K will rockthe pawl-carrying arm or lever N, thereby causing the pawl n to effect astep-by-step revolution of the ratchet-wheel M. As the ratchet-wheel Mis thus revolved it will cause the screw-sleeve R, with which itengages, to carry the drill-stock C in forward direction,

and thus gradually feed forward the drill to the required extent at thesame time that the revolution of the drill is effected. In order toenable the drill to be rapidly withdrawn from the hole that it hasbored, it is only necessary for the operator to swing the engagementlatch or pin J from the position shown in full lines to the positionshown by dotted lines in Fig. 7 of the drawings, thereby causing the endof this latch or pin to pass between the spokes of the ratchet-wheel Mand thus lock the ratchet-wheel to the drivin g-sleeve. If then the pawln be thrown backward out of engagement with the ratchetwheel, theoperator can by turning backward the crank f impart a rapid rotation tothe driving-sleeve K in reverse direction, and inasmuch as theratchet-wheel M is locked to the driving-sleeve it follows that a `quickbackward movement of the screw-sleeve R and of the drill-stock will besecured.

So far as I am aware my invention presents the first instance of a drillin which means is provided for locking the feed ratchet-wheel IOO with apart of the driving mechanism, whereby a more rapid movement may begiven to the ratchet-wheel for thel purpose of withdrawing the drillfrom its work, and I do not wish, therefore, that the invention shouldbe understood as restricted to the precise details of construction aboveset out, since manifestly the locking mechanism, whereby the rapidreverse movement of the ratchet-wheel is secured, may be of any suitabletype. When the position of the drill is to be shifted-as, for example,for the boring of new holes or to remove it on the approach ofrailway-trainsthe operator will press backward the shiftingbar V fromthe position shown by full lines to the position shown by dotted linesin Fig.

l, thereby quickly withdrawing the drill fromV proximity to the rail andpermitting the hooked ends a of the side bars A to be lifted from therails. It will thus be seen that not only can the drill be quicklywithdrawn from the bored hole, but bya simple movement of his foot theoperator can quickly retract the drill, so that the hooked ends of thesupporting-frame can be instantly disengaged from the rail. Thesefeatures are of importance, particularly in drills designed for theboring of railway-tracks, since they enable the drill to be instantlyremoved from the track in case of the approach of a train.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, isi l. In apparatus of the character describedthe combination with a supportin g-f rame provided with hooks adapted toengage a trackrail, of a drill-stock, a horizontally-arrangedreciprocating carriage mounted upon said supporting frame and carryingsaid drillstock and vertically-swinging toggle-links connecting the rearof said supporting-frame with said reciprocating carriage whereby saidcarriage and drill stock can be quickly moved toward and from the workand held in place.

2. In apparatus of the character described, the combination of a mainsupporting-frame comprising side bars A, A' having hooks at one end andhaving their opposite ends rigidly connected with a suitable cross-baror base A', and a reciprocating carriage B mounted upon said side barsA, A', a drillstock mounted in said carriage, means for shifting saidcarriage, a support rising from and sustained by said carriage and meansfor operating the drill-stock carried by said support.

3. In apparatus of the character described, the combination with asuitable support, of a rectangular carriage movably mounted thereon, ahorizontally-arranged drill-stock and means for rotating saiddrill-stock, a support D rising vertically from said frame and providedwith an arm D', a shaft journaled inv said support D and said arm D' anda brace-frame E connected to said support D, said shaft being suitablyengaged by said drill-stock.

4. In apparatus of the character Vdescribed the combination with asuitable support or frame provided with means whereby it may beconnected with a railway-rail, of a drillstock, a driving-sleeve throughwhich said drillstock passes and to which it is connected, a screw foradvancing said drill-stock, pawl-and-ratchet mechanism for operatingsaid screw and means for detachably locking the ratchet-wheel. to thedriving-sleeve whereby a rapid backward movement may be given to theratchet-wheel to withdraw the drill from its work.

5. In apparatus of the character described, the combination with asuitable support provided with hooks for engaging the rail, of acarriage, a drill-stock, means for rotating said stock, a screw foradvancing said stock, pawland-ratchet mechanism for operating said screwand a shiftable latch for connecting said ratchet with the means forrotating the drill, whereby the drill may be quickly shifted.

6. In apparatus of the character described, the combination with asuitable support, of a drill-stock, means for rotating said stock, ascrew for advancing said stock, pawl-andratchet mechanism for operatingsaid screw, a driving-sleeve for effecting its rotation, a shiftablelatch carried by said driving-sleeve and adapted to lock said sleeve tothe ratchet in order to permit the rapid movement of the drill-stock.

DAVID A. MOORE.

Witnesses:

GEO. C. UTLEY, C. E. PHnLrs.

IOO

